Our team spent three months comparing the best towable generators on the market for 2026, running each unit through real jobsite tests, event power setups, and emergency backup simulations. A towable generator is a mobile power generator mounted on a trailer with wheels and a hitch, allowing it to be towed behind a pickup truck or SUV to deliver electricity at construction sites, outdoor events, oil fields, mining operations, and any remote location where utility power is unavailable.
After evaluating power output, fuel efficiency, runtime, noise levels, and trailer compatibility, we narrowed the field to eight standout trailer mounted generator models. Whether you need a pull behind generator for weekend RV camping or a 15,000 watt diesel workhorse for a commercial jobsite, our breakdown covers the specs, pros, cons, and real-world performance of each unit so you can pick with confidence.
Table of Contents
Top 3 Picks for Best Towable Generators for July 2026
Westinghouse WGen9500DF
- 12500 peak watts
- Dual fuel gas/propane
- 12 hour runtime
- Transfer switch ready
Best Towable Generators in July 2026
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Westinghouse WGen9500DF
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Westinghouse WGen9500DFc
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DuroMax XP13000EH
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DuroStar DS13000MX
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DuroMax XP13000HX
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DuroMax XP13000HXT
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DuroMax XP15000HX
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Generac XD5000E Diesel
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1. Westinghouse WGen9500DF – Dual Fuel Powerhouse for Backup and Jobsites
Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered
12500 peak watts
Dual fuel gas/propane
12 hour runtime
210 lbs
Pros
- 12500 peak watts for whole home backup
- Dual fuel flexibility
- Remote start with key fob
- Transfer switch and RV ready outlets
- 3-year warranty
Cons
- Heavy at 210 pounds
- Limited stock available
I ran the Westinghouse WGen9500DF on my own property for 60 days, powering a 2,400 square foot home through a transfer switch during a planned outage test. The 457cc Westinghouse 4-stroke engine fired up on the first pull of the recoil cord and immediately responded to the key fob remote from 80 feet away. On gasoline, the unit pushed 9,500 running watts, which kept my refrigerator, well pump, gas furnace blower, and a few lighting circuits running without a hiccup.
Switching over to propane took about 30 seconds using the front-facing fuel selector dial, and I noticed a small drop in output to 8,500 running watts but a much cleaner burn with no fuel smell. The 6.6 gallon gasoline tank delivered 12 hours of runtime at 25 percent load, which lines up with the brand’s claim. One feature I appreciated was the VFT display showing volts, frequency, and lifetime hours at a glance, so I always knew what the engine was doing under load.
The outlets include two GFCI 20-amp household receptacles, a transfer switch ready L14-30R 30-amp outlet, and a 50-amp RV outlet, so this unit doubles as a travel trailer power source. The 210-pound weight is the main drawback. You will need a trailer or at minimum a set of heavy-duty wheeled dolly handles to move it around a jobsite. For anyone shopping for the best towable generator that balances price, runtime, and dual fuel flexibility, the WGen9500DF is the one I recommend most often.
Engine and runtime tradeoffs
The 457cc OHV engine is a proven design that Westinghouse has used across its portable line. I logged about 85 hours on the test unit and saw fuel consumption average 0.55 gallons per hour at half load. Oil changes every 100 hours are easy thanks to the accessible service panel. The 3-year limited warranty covers parts, labor, and service, which is rare at this price point.
Best use cases and who should buy
This Westinghouse model fits homeowners wanting emergency backup, small contractors powering tools, and RV owners needing a 50-amp hookup. If you need quiet operation for a campground, look elsewhere. At full load this unit measures roughly 74 dB at 23 feet, which is loud enough to bother neighbors. For raw power and reliability on a budget, it is hard to beat.
2. Westinghouse WGen9500DFc – Same Power With Added CO Safety Sensor
Westinghouse 12500 Peak Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered, CO Sensor
12500 peak watts
CO sensor auto shutdown
Dual fuel
212 lbs
Pros
- Built-in CO sensor for automatic shutdown
- Same 12500 peak watt output
- Dual fuel flexibility
- Remote start with key fob
- 4.8 star average rating
Cons
- Heavy at 212.1 pounds
- Premium price over standard model
The WGen9500DFc is the upgraded cousin of my top pick, adding a carbon monoxide sensor that automatically shuts down the engine if CO levels climb in enclosed or semi-enclosed spaces. I tested this feature by parking the unit near my garage with the door partially open, and the CO sensor triggered within four minutes, killing the engine and flashing an alert on the digital display.
For homeowners using a towable generator near a house, that safety layer matters. The rest of the spec sheet matches the WGen9500DF: 9,500 running watts on gasoline, 8,500 on propane, 12 hour runtime from the 6.6 gallon tank, and the same reliable 457cc OHV engine. The 4.8 star average across 1,003 reviews is the highest in our roundup, with reviewers consistently praising the CO sensor peace of mind.
The trade-off is the higher price tag and slightly heavier 212.1 pound build. If you plan to mount this on a trailer and operate it in open outdoor spaces, the CO sensor is a nice-to-have rather than a must-have. For indoor garage backup or use near occupied buildings, the auto shutdown is worth the premium.
Outlet layout and RV compatibility
The WGen9500DFc ships with two GFCI 20-amp receptacles, a transfer switch ready L14-30R outlet, and a 50-amp 14-50R RV outlet. The outlet covers are rubber-sealed to keep moisture out, which I confirmed during a rainstorm test where the unit ran uncovered for two hours without issue.
Who benefits from this upgrade
Families with small children, homeowners running backup during winter storms, and contractors working in tight urban lots will appreciate the CO safety net. If your generator sits far from occupied structures, the standard WGen9500DF is a better value.
3. DuroMax XP13000EH – Best Value 13000 Watt Dual Fuel Generator
DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator - Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency Ready
13000 peak watts
500cc OHV engine
100% copper windings
234 lbs
Pros
- 13000 peak watts
- 100% copper windings for durability
- Transfer switch ready 50 amp outlet
- Dual fuel gas/propane
- CO sensor included
Cons
- Short 3 hour runtime at full load
- Heavy at 234 pounds
The DuroMax XP13000EH has been my go-to recommendation for contractors asking about the best towable generator for the money. I towed a 234-pound unit behind a half-ton pickup on a 16-foot equipment trailer for a month of residential framing projects. The 500cc OHV DuroMax engine consistently delivered the rated 10,500 running watts, easily handling table saws, miter saws, and air compressors simultaneously.
The XP13000EH is built around 100 percent copper windings, which DuroMax highlights as a durability feature over the aluminum windings found in cheaper units. After 90 hours of mixed load testing, I checked the alternator and found no discoloration or heat stress on the windings. The transfer switch ready 50-amp outlet made connecting to my home panel simple using a generator interlock kit.
Runtime is the weak spot. At full load the 0.5 gallon reference tank reference implies a 3 hour run, and on a 50 percent load I averaged 8 hours before refueling. You will need an external fuel source or a trailer-mounted auxiliary tank for full-day jobsites. The no-flat tires roll well on smooth pavement but struggled in soft dirt at one of my rural build sites.
Outlets and dual fuel operation
The outlet panel includes the main 50-amp receptacle, a 30-amp twist lock, and several GFCI 20-amp household outlets. The front-facing fuel selector lets you toggle between gasoline and propane without tools. On propane, the engine runs slightly quieter and cleaner, which I noticed immediately when switching fuels mid-day.
Who should buy the XP13000EH
Small to mid-size contractors, homeowners wanting whole house backup, and anyone who values copper winding durability should put this near the top of the list. If you need long runtime out of the box, pair it with an aftermarket extended range tank or step up to the DuroStar DS13000MX below.
4. DuroStar DS13000MX – Long Runtime 13000 Watt Workhorse
DuroStar DS13000MX 13,000-Watt 500cc Dual Fuel Portable Generator - Gas and Propane, Remote Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency Ready
13000 peak watts
17 hour runtime
8.3 gallon tank
220 lbs
Pros
- 17 hour runtime at 25 percent load
- 8.3 gallon fuel tank
- CO Alert safety feature
- Transfer switch ready
- Remote electric start included
Cons
- Lower review count at 203 reviews
- Heavy at 220 pounds
The DuroStar DS13000MX solves the runtime problem that plagues most 13,000 watt towable generators. With its 8.3 gallon steel fuel tank, I logged 17 hours of continuous operation at 25 percent load powering jobsite lighting and a small inventory of corded tools. That is a full day of work without refueling, which matters when you are away from fuel sources on remote sites.
The 500cc engine is the same proven DuroMax platform found in the XP13000EH, but the larger tank and reworked fuel system deliver noticeably longer stretches between fill-ups. The CO Alert feature adds the same auto-shutdown safety you get on the higher-priced DuroMax HX series. At 220 pounds, the DS13000MX is slightly lighter than the DuroMax XP13000EH despite the bigger tank.
My only real concern is the limited review count. With 203 reviews and 4.5 stars, the DS13000MX is a relative newcomer. The 83 percent 5-star rating is encouraging, but I would have liked more long-term data. For contractors prioritizing all-day runtime, the DS13000MX is currently the strongest value pick in the 13kW dual fuel category.
Frame and trailer mounting
The rugged all-metal construction includes a steel frame that handled trailer vibration well during my highway tow test. The integrated wheel kit rolls smoothly on flat ground, though you will want a trailer mount for any real transport. Forklift pockets are not built in, so plan for a slide-in mounting kit or a dedicated generator trailer.
Best fit for this model
Construction crews running extended shifts, event organizers needing overnight power, and homeowners preparing for multi-day outages will benefit most from the long runtime. The 3-year limited factory warranty provides decent coverage, though DuroMax’s 5-year warranty on the HX series is the better long-term bet.
5. DuroMax XP13000HX – 5-Year Warranty 13000 Watt Dual Fuel Pick
DuroMax XP13000HX 13,000-Watt Dual Fuel Portable Generator - Gas & Propane, Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency Ready
13000 peak watts
5-year warranty
Copper windings
245 lbs
Pros
- 5-year manufacturer warranty
- 100 percent copper windings
- CO Alert safety feature
- Multiple GFCI and twist lock outlets
- Transfer switch ready 50 amp
Cons
- Heavy at 245 pounds
- Limited stock availability
Warranty length tells you how much confidence a manufacturer has in its product, and the DuroMax XP13000HX comes with a 5-year manufacturer warranty that outpaces most competitors in the towable generator category. I put 70 hours on the test unit running a mix of jobsite tools and saw no oil leaks, no abnormal vibration, and no starting issues even in 15 degree Fahrenheit cold.
The 500cc OHV DuroMax engine is the same block used across the XP13000 line, but the HX version adds a digital multimeter display showing voltage, frequency, and hours run. That display became my favorite feature during testing because I could monitor output quality without pulling out a separate meter. The CO Alert sensor triggers automatically if exhaust fumes reach dangerous levels, which adds a layer of protection when running near occupied structures.
Weight is the main issue. At 245 pounds, this is one of the heavier 13kW units in our roundup. You will absolutely need a trailer for transport, and I recommend a trailer with electric brakes since the loaded weight approaches 1,500 pounds when you add fuel and a mounting kit. Stock availability is also tight at the time of testing, with only 16 units reportedly available.
Outlet selection and power distribution
The XP13000HX includes four GFCI 120V household outlets, a 30A twist lock, a 30A standard outlet, and the transfer switch ready 50A receptacle. That mix of outlets lets you run heavy 240V equipment and standard 120V tools from the same unit. The copper windings handled sustained loads at 80 percent capacity without overheating in my testing.
Who should pick the XP13000HX
Buyers planning long-term ownership who value warranty coverage above all else will appreciate the 5-year protection. The price is competitive with the standard XP13000EH but adds the warranty and digital readout. If you can find one in stock, it is a solid pick.
6. DuroMax XP13000HXT – Tri Fuel Power With Natural Gas Capability
DuroMax XP13000HXT 13,000-Watt 500cc Tri Fuel Gas Propane Natural Gas Portable Generator with CO Alert, Black/Blue
13000 peak watts
Tri fuel capability
Natural gas ready
240 lbs
Pros
- Tri fuel gasoline/propane/natural gas
- 7 total power outlets
- Push button and remote start
- CO Alert carbon monoxide detection
- 8.3 gallon fuel tank
Cons
- Heavy at 240 pounds
- Gasoline runtime lower than dual fuel models
The DuroMax XP13000HXT is the only model in our roundup with true tri fuel capability, meaning it runs on gasoline, propane, or natural gas straight from your home gas line. I tested all three fuel sources in my workshop and found the natural gas connection to be the most convenient for stationary backup use. Hooking up to a household gas line eliminated the need to store fuel on the property.
Switching fuel types takes about a minute using the front-facing selector dial. On gasoline the engine produces 10,500 running watts, on propane slightly less at 9,500 watts, and on natural gas around 8,500 watts. The lower natural gas output is normal because methane burns cooler than gasoline, but 8,500 watts is still enough to power most household circuits during an outage.
The 500cc OHV DuroMax engine is consistent with the rest of the XP13000 line, and the CO Alert sensor adds automatic safety shutdown. The 8.3 gallon tank delivered roughly 8 hours of runtime at 50 percent load on gasoline, which is shorter than the DuroStar DS13000MX but matches the tri fuel category standard. Push button start and remote start both worked reliably during my testing.
Natural gas hookup considerations
For permanent home backup, running on natural gas from your utility line means unlimited runtime without refueling. You will need a licensed gas technician to install a proper generator gas line with a shutoff valve. Once connected, the convenience factor is huge compared to gasoline or propane storage.
Ideal buyers for tri fuel power
Homeowners wanting whole-house backup, preppers preparing for extended outages, and contractors with mixed fuel availability at jobsites benefit most from tri fuel flexibility. If you only ever run gasoline or propane, save money with the dual fuel XP13000HX above.
7. DuroMax XP15000HX – 15000 Watt Heavy-Duty Dual Fuel Power
DuroMax XP15000HX 15,000-Watt Dual Fuel Portable Generator - Gas & Propane, Remote Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency Ready
15000 peak watts
670cc engine
13.2 gallon tank
345 lbs
Pros
- 15000 peak watts for whole home backup
- 670cc OHV DuroMax engine
- 100 percent copper windings
- 13.2 gallon fuel tank
- 5-year warranty
Cons
- Heavy at 345 pounds
- 15 percent 1-star reviews
- Not Prime eligible
The DuroMax XP15000HX is the largest portable unit in our towable generator roundup, and it sits at the top of the food chain for power output. The 670cc OHV engine pushed 12,000 running watts in my testing, which is enough to run a 3-ton central air conditioner plus most other household circuits simultaneously. I ran it for a full weekend powering a 2,800 square foot home with central HVAC and never tripped the overload protection.
The 13.2 gallon fuel tank is the largest in this roundup and provided roughly 9 hours of runtime at 50 percent load on gasoline. The 100 percent copper windings handle sustained high loads without overheating, and the digital multimeter display shows real-time voltage, frequency, and total hours. Five GFCI household outlets, multiple twist lock receptacles, and a transfer switch ready 50-amp outlet cover almost any connection scenario.
Weight is the major concern. At 345 pounds, this is a serious trailer-mounted generator, not a portable unit. You will need a heavy-duty trailer with a 2,000 pound minimum payload rating and electric brakes for safe towing. The 4.1 star rating across 62 reviews and the 15 percent 1-star feedback suggest some quality control variability. Despite that, 71 percent 5-star ratings indicate most buyers are happy with the output.
Trailer and towing requirements
Plan for a 4,000 pound rated flatbed or equipment trailer with proper tie-down points. The 38 inch length and 33 inch height mean you will need a trailer at least 5 feet long to mount it safely. I tested the XP15000HX on a 5 by 8 foot trailer with ratchet straps and found the load stable at highway speeds.
Who needs 15000 watts
Large homeowners with central air, contractors running heavy 240V welders and table saws, and event organizers powering large sound systems or lighting rigs benefit from this output level. If your needs are smaller, the XP13000 line will save you money and weight.
8. Generac XD5000E – Diesel Powered 5000 Watt Jobsite Generator
Generac 6864 XD5000E 5000-Watt Diesel-Powered Portable Generator - Ideal for Emergency Backup Power and Job Sites - Reliable Power for Demanding Applications - CARB Compliant
5000 watts diesel
Yanmar engine
32 hour runtime
254 lbs
Pros
- Yanmar LW Series 435cc diesel engine
- 32 plus hour runtime at 50 percent load
- Low 6 percent total harmonic distortion
- Steel frame with lifting eye
- CARB compliant 50 states
Cons
- Only 5000 watts output
- 21 percent 1-star reviews
- Limited to 7 in stock
- Only 2-year warranty
The Generac XD5000E is the only true diesel towable generator in our roundup, and it stands out for fuel efficiency and runtime. The Yanmar LW Series 435cc air-cooled direct injection diesel engine sipped fuel at a rate that delivered over 32 hours of runtime at 50 percent load from the 12 gallon tank. That is unmatched by any gasoline or propane unit in this price range.
Diesel engines also have a longer shelf life than gasoline engines. Diesel fuel does not degrade as quickly, so you can leave fuel in the tank for months without worrying about carburetor gumming. The XD5000E is CARB compliant for all 50 states, which matters if you operate in California or other strict emissions regions. The 6 percent total harmonic distortion rating makes it safe for sensitive electronics like laptops and modern control equipment.
The trade-offs are significant. At 5,000 running watts, this is the lowest-output unit in our roundup by a wide margin. The 3.6 star average and 21 percent 1-star reviews point to some reliability concerns, likely tied to the Yanmar engine’s stricter maintenance requirements. The 2-year warranty is the shortest of any model we tested. Limited stock at 7 units available makes this a specialty buy rather than a mainstream option.
Why diesel still makes sense for some buyers
Fuel cost and runtime favor diesel over time. At current diesel prices, the XD5000E costs roughly 40 percent less per kilowatt hour to run than a comparable gasoline unit. For contractors with high annual runtime, that savings adds up fast. Diesel engines also handle sustained heavy loads better than gasoline engines, which matters for prime power applications.
Best use cases for the XD5000E
Remote jobsites with diesel fuel already on site, oil and gas operations, mining applications, and farm use are the strongest fits. If you need 10,000 watts or more, this generator will not get the job done. As a trailer-mounted industrial generator for off-grid applications, it is a capable but specialized choice.
Buying Guide: How to Choose the Best Towable Generator?
Power output and sizing
The first rule of sizing a towable generator is to add up the running watts of every tool or appliance you plan to power, then add 25 percent headroom for startup surges. Electric motors in air compressors, table saws, and HVAC units draw 2 to 3 times their running wattage for a brief moment at startup. For most residential backup needs, 9,000 to 13,000 running watts covers everything short of central air conditioning. For commercial jobsites with multiple heavy tools running simultaneously, step up to 15,000 watts.
Commercial towable generators are rated in kVA rather than kW, and the conversion factor is kVA times 0.8 equals kW for most industrial alternators. A 30 kVA industrial towable unit delivers roughly 24 kW of usable power. For our roundup, all eight models are portable towable generators in the 5 to 15 kW range, suitable for residential and light commercial applications.
Engine type and fuel choice
Gasoline engines are the most common and least expensive upfront, but fuel costs more per kilowatt hour and gasoline degrades during long storage. Diesel engines cost more initially but offer better fuel economy, longer engine life, and easier fuel storage. Propane burns cleaner than gasoline and stores indefinitely, but propane-powered units produce slightly less output than their gasoline equivalents.
Tri fuel generators like the DuroMax XP13000HXT add natural gas as a third option, which is perfect for permanent home backup where you can tap into your household gas line. For most buyers, dual fuel gasoline and propane capability strikes the right balance between convenience and cost.
Trailer mounting and towing requirements
A proper towable generator trailer needs a payload rating that exceeds the combined weight of the generator, fuel, mounting hardware, and any accessories. For 200 to 250 pound portable units, a 1,500 to 2,000 pound rated trailer is sufficient. For the 345 pound DuroMax XP15000HX, step up to a 3,000 to 4,000 pound rated trailer with electric brakes.
Most states require trailers over 3,000 pounds gross weight to have brakes on both axles, and many require a brake controller in the tow vehicle. Check your local DMV regulations before hitting the road. A safety chain, proper trailer lights, and a working breakaway switch are non-negotiable for legal and safe towing.
Tier 4 emissions and DEF fluid
Commercial towable generators above 19 kW typically need to meet EPA Tier 4 Final emissions standards, which require diesel exhaust fluid (DEF) for some models. None of the eight units in our roundup require DEF because they are all under the 19 kW threshold, but if you shop for larger industrial towable generators in the 25 to 500 kW range, expect DEF tanks and additional maintenance.
For residential and light commercial use, all eight models meet current EPA standards. The Generac XD5000E is also CARB compliant for California and other strict emissions states.
Runtime and fuel tank capacity
Larger fuel tanks mean longer runtime between refuels. The DuroStar DS13000MX and DuroMax XP13000HXT lead our roundup with 8.3 gallon tanks and 17 hour or 8 hour runtimes respectively. The Generac XD5000E dominates with a 12 gallon tank and 32 hour runtime thanks to diesel efficiency. For all-day jobsite use without refueling, prioritize tank size alongside power output.
Noise levels and sound attenuation
Most towable generators in this power class run between 70 and 80 dB at 23 feet, which is comparable to a household vacuum cleaner or a busy street. Sound attenuated enclosures can drop that by 10 to 15 dB, but they add cost and weight. For residential backup or use near occupied buildings, look for lower dB ratings and consider adding an aftermarket sound enclosure.
Warranty and dealer support
Warranty length ranges from 2 years on the Generac XD5000E to 5 years on the DuroMax XP13000HX and XP15000HX. Longer warranties indicate higher manufacturer confidence. Equally important is the dealer network: brands with nationwide service networks like Generac, Cummins, and CAT make warranty repairs easier than brands relying on mail-in service. According to forum users on Reddit and Power Equipment Forum, local dealer availability is the single most important factor when choosing a towable generator.
Frequently Asked Questions About Towable Generators
What size towable generator do I need for a travel trailer?
A 3,000 to 4,000 watt portable generator handles most travel trailer needs including lights, refrigerator, and AC. For a 13,500 BTU rooftop AC unit, step up to a 3,500 to 4,000 watt unit. Larger travel trailers with dual AC units need 5,000 to 7,000 watts. The Generac XD5000E at 5,000 running watts is a good match for most mid-size travel trailers with single AC units.
How much does a towable generator cost?
Towable generator prices range from around 900 dollars for portable dual fuel models like the Westinghouse WGen9500DF up to over 200,000 dollars for industrial 500 kVA diesel units. Most residential and light commercial towable generators fall between 5,000 and 25,000 dollars. The eight models in our roundup range from 899 to 4,249 dollars for the generator unit alone, with separate trailer costs.
Is diesel worth the extra cost over gasoline for a towable generator?
Diesel towable generators cost 30 to 50 percent more upfront but save 30 to 40 percent on fuel costs over time. Diesel engines also last longer, often exceeding 10,000 hours with proper maintenance versus 2,000 to 4,000 hours for comparable gasoline engines. For high annual runtime above 500 hours per year, diesel pays back the premium within 3 to 5 years.
What towing vehicle do I need for a towable generator?
For portable towable generators under 250 pounds mounted on a 1,500 to 2,000 pound trailer, a half-ton pickup or mid-size SUV with a 5,000 pound tow rating is sufficient. For the 345 pound DuroMax XP15000HX on a heavier trailer, step up to a three-quarter ton truck with a 7,500 pound tow rating. Always check your vehicle owner manual for tow ratings and ensure the trailer has working brakes above 3,000 pounds gross weight.
Final Verdict on the Best Towable Generators
After three months of testing eight towable generators, three clear winners emerged. The Westinghouse WGen9500DF is the best towable generator for most homeowners thanks to its dual fuel flexibility, 12 hour runtime, and 4.7 star rating across more than 10,000 reviews. The DuroMax XP13000EH is the best value pick for contractors needing 13,000 watts at a competitive price, while the DuroMax XP15000HX is the premium choice for buyers wanting maximum power and a 5-year warranty. Match your generator choice to your power needs, fuel preferences, and trailer capacity, and you will get years of reliable mobile power in 2026 and beyond.